The invention belongs to the technical field of bean sprout production, in particular discloses functional bean sprouts prepared from Chinese herbal medicines used as both food and medicine and a method for preparing the functional bean sprouts. The method comprises the following steps: step one, weighing 20-50% by weight of kudzuvine root, 15-50% by weight of hawthorn and 10-40% by weight of honeysuckle, adding water or ethanol to extract, filtering and adding 0.02-0.05% by weight of vitamin C to a filtrate to obtain a sprout culture solution; and step two, soaking beans with the sprout culture solution, spraying the sprout culture solution or/and water and culturing according to the conventional bean sprout culture method, thereby obtaining the bean sprouts. By adopting the method, the Chinese herbal medicines used as both the food and the medicine, such as the kudzuvine root, the hawthorn and the honeysuckle can be used effectively, so a new way is provided for the comprehensive utilization of the traditional Chinese medicine. The prepared functional bean sprouts comprise active components beneficial to human health, such as puerarin, thereby providing an effective way and a research idea for the development of the functional bean sprouts.